[ARC5] BC-348Q CW Oscillator Question
J Mcvey
ac2eu at yahoo.com
Tue Jan 12 21:26:04 EST 2016
If that's what the circuit DC path shows, and the CW osc works,I wouldn't worry about it. Probably is a typo.
I was never fond of wholesale resistance measurements as a troubleshooting tool anyway. Are you just poking around or is there an issue with it?
On Tuesday, January 12, 2016 6:50 PM, Mark K3MSB <mark.k3msb at gmail.com> wrote:
Gentlemen:
I'm restoring my BC-348Q receiver. The resistance measurements I get for the Plate (Pin 6) of the 2nd Det / CW Oscillator tube (V233) are way off.
Table D from AN-08-10-112:
CW OSC OFF: 500K
CW OSC ON: 5M.
My measurements:
CW OSC OFF: Infinite
CW OSC ON: 600K
>From sketching out the DC circuit path from V233 Pin 6, I come up with :
CW OSC OFF: Infinite
CW OSC ON: 567K
I'm wondering if the manual has the values flipped?
73 Mark K3MSB
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